铸件表面质量要求.ppt

1、Definitions of Surface Quality A Surface Texture. Natural surface of the casting after shpt blasting (4 levels) B Non Metallic Inclusions Non metallic material trapped on the casting surface (4 levels) C Gas Porosity Indications of gas at the casting surface (4 levels) D Solidification Discontinuiti

2、es E Sand expansion Discontinuities F Metal Inserts G Metal Removal Marks Surface remaining after using oxigas or air carbon or processes for metal removal (4 levels) H Metal Removal Marks Surface remaining after using a mechanical means of dressing a cast surface or a previously thermally dressed s

3、urface (4 levels) J Metal Removal Marks Welds. Indications of welds fully or partially removed by thermal or mechanical dressing (4 levels),ASTM A802 Standard Practice for Steel Castings, Surface Acceptance Standards, Visual Examination,Visual Criteria for GEWE Sand Castings,GEWE.all._spc_castings_s

4、upplement.GEEN.00 (392A1165),Quality Level that all GEWE Casting Suppliers must delivery to GEWE facility,Surface Texture Quality Level A1,Critical Areas,Surface Texture Quality Level A2,Critical Areas & Non Critical Areas,Surface Texture Quality Level A3,Non Critical Areas,Gas Porosity Quality Leve

5、l C1,Critical Areas,Gas Porosity Quality Level C2,Non Critical Areas,Gas Porosity Quality Level C3,No acceptable,Non Metallic Inclusions Quality Level B1,Critical Areas & Non Critical Areas,Non Metallic Inclusions Quality Level B2,Non Acceptable,Non Metallic Inclusions Quality Level B4,Non Aceptable,Solidification Discontinuity Level D1,Non Aceptable,Solidification Discontinuity Level D2,Non Aceptable,Sand Expansion Discontinuity Quality Level E3,Non Aceptable,Sand Expansion Discontinuities Quality Level E5,Non Aceptable,